Man-made wonders

We know what the natural wonders of the world are (the Grand Canyon, Mount Everest, etc.), but what about the absolute must-see buildings? The ones that will make your jaw drop and will have you asking, "how did they do that!?"

4. Red Ribbon, Qinhuangdao, China

Winner of the American Society of Landscape Architects award, this knee-high red steel bench runs half a kilometer around Qinhuangdao City and acts as a viewing place for the area's lush vegetation and diverse species.